Question

A = 1/2 (b+c)h

rearrange the formula to highlight the heigh

Answer 1

$A=\frac{1} {2} (b+c) h$

Multiply both sides by 2 to do away with a half;

$2×A=(b+c)h$

Divide both sides by $(b+c)$ so as to remain with the height ;

$h\frac{(b+c) }{(b+c)} =\frac{2A} {(b+c)}$

The $(b+c)$ on the numerator and denominator will cancel out making the remainder to be ;

$h=\frac{2A}{(b+c)}$